Of chicag



Feb. 2s, 192s.

F/GJ

Y INVENTOR je l AmELY. DODGE ATTORNEY Feb. 2s, 192s.

AQY. DODGE BRAKE SHOE Filed Oct.

24, 1925 2 Sheets-Sheet 2 lNvENToR ADIEL DODGE ATTORNEY Patented Feb. 28, 1928.

UNITED STA TES` ` i y. insane MMT PHC.

ADIEL Y. DODGE, or sonnen BEND, iraniana, Assieiron rro Bennie; :enana censeur, i or cnicneonniiiivors, n CORPORATION or iiiiiiieois.

BRAKE SHOE.

Apeiicanon sied october e4, y1925. serial No. 647,535.

rllhis invention relates to brake shoes, and

is illustrated as einbodied in a threeeshoe` Bendix brake. An object of theinvention is to provide a .strong but ineirpensiveforin of shoe capable of overlapping an adgacent shoe,ito augment the area engaging the drinn, by forming` at the end of the shoe pivoted oi' anchored ineans overlapping said adiacent shoe, and preferably formed as spaced: arins straddling` the end of the adjacent shoe and offset from the curve of the friction part of the shoe so that it clears the end ofthe adjacent slice. n

Otherfeatures of theinvention relate to a novel steady restl for positioningthe' shoe laterally, to an in'ipifoved mounting for a cain yWear pla-te, aiidtoothei' desirable particular constructionswhich will be apparent frein the following description of the illustrative shoes shown inr the accompanying drawings, in Which:

, Fig.` lis a vertical view of the brake, gust .inside theuvvheel, showing the brake shoes in side elevation; y

Figs. 2, v3, and 4C are respectively inside, side, and outsideelevations of one of the end shoes; y Y

Fig. 5 is a partial View of theassembled shoes, brolrenaway on the line 5%5 'l toishoW the rnanner of, anchoring one of the end shoes. y

ling. 6 is a section on the line6-6 of Fig.

1, showing the anchor of the central shoe,`

Fig. 7 is a section on the line 75,-? o'lvFig. 1, showing the pivot connccting'tivo otthe shoes; l

i Fig. 8 is a section onthe line 8-8 oflli ig. 1shoWing the spring holding one of the shoes laterally; and v Figs. 9, 10, and 11 are onthe line 9-9 of Fig. 1, showing different .forms of steady rests. i f y y The brake shown in Fig. 1, and in which lthe shoes inay` be used, includes a. druin `10, lWithin which `are arranged `a T-section centralshoe 1,2, a reverse end shoe 14, and va servo end shoe 16. Preferably shoes 14 and r16 are identical and interchangeable.

The shoes are expanded to apply the brake byineans `shown as a double cani V18, against the resistance of return springs 20 and f The shoes are preferably diecast of aluminum or an aluminum alloy.

or rig.-

vbut is channel-shapedatits end with the side `engagin'gthe backing f plate.

Shoe 12 is anchored at its right end (Fig. 1) on a pivot pin 24 carried by backing plate 26, and projecting through relatively large openings 28 in sho-e 14, so that` it docs not interfere with the inovenient of that shoe.

Y Each of shoes 14 and 16 has a cylindrical* ly-cur'ved friction face, with a reinforcing Web or flange 30, havinol oppositelydirected `substantiallyradial flanges 32 at its end to which a cani Wear plate 311 is riveted or otherwise secured, thus transmitting thebrakeapplying thrust of cani 18 Adirectly to Webs k y n At the opposite end of each` shoe, web 3() is offset froin the central planeof the shoe, preferably being bifurcated to vforni spaced arins 33, to,y overlap the corresponding end of slice 12. 'As illustrated in Figs. 5 anidG, itis preferable to forni the innerfacesof arms 33 as parallel planes slidably embracing the planesides of a bossl 35 on the end of shoe 12, thus positioning the end of shoe 12 laterally. Arnie 33'0f shoe 14 are 'pivotedA at their ends on an anchoi- 36 carried by backing plate 26, and passing througha` relatively large opening ,38 in shoe 12.

y A part 40 bridging the arins 33 of each of the shoes 14 and 16, at their bases, forins a continuation of the friction face of the shoe. Thus eachv of these shoeslas illustrated. is T-shaped in section for inost of itslength,

flanges of the channel continued as spaced anchoring arins stiaddl'ing thejend of shoe 12. It should be notedthat arins 33 are offset inwardly freni the cuive of the fric-V tion face (Figs. land 3) to clear the end of 90 shoe 12.

A spring/l2 connected tobacling plate 26, and to a pin 4.11' engaging shoe 16, urges' thisl shoe laterally toward the backing plate. The slices inay be positioned laterallyby 'suitable steady rests engaging the backing plate, and shown in detail in Figs. 9, 10, and` 11; The onein Fig. 9 includes a post 46 on which nuts 48 are threaded to hold it adjustably with respect to Web 30 of its shoe, and which 100 enters a recess in a block 50 of fiber, .slidably ,Y

The post 146 in Fig. 10 is of substantially the sanie construction, except that itE is longer and has a rounded end engaging the backing plate directly, block .'50` beingon'iitted. Post 246, y

11, has an Unthreaded shankprojecting into an opening in the Web 30, and a rounded enlarged head Qd'dslidably engaging` the backing plate and also serving to prevent the shank from coming out of the shoe.

tion throughout. most of 'itslen'gtln and having4 a steel Wear plate at one end and having Agenerally parallel spaced arin's atwlts other end to straddle the end of an adjacent shoe.v

A bral're shoe 'TF-shaped in cross section throughout I nost of itslength, and having generally parallelV spaced arins at its ends to straddle `the end of an adjacent shoe. 3, A brake shoe T-shaped-in cross section and having generally parallel spaced arins at its ends to straddle the end of an adjacent shoe, said arins having openings large enough for clearance about the anchor of the adjacent shoe. s v

A. A brake shoe T- shape'd in cross section throughout most of itsflength, and having a ivearplate at oneend 'and a slot 'adjacent saidend for the passage of a post supporting nieans confining the shoe laterally.

5. A brake shoe having a steady-rest adjustably inounted therein Vand engageable with the backing plate vof `a brake.

6. A brake Vshoe having'v separate pin projecting' from its side and constructed and arranged slidjably to engage the backing plate of a brake.

7. A brake slie carrying a rigid separate part of ber spaced from its side and serving as a steadyfrest slidably engaging the brake-backing plate.

8. A brake slice chai'inel-shap'ed at least at itsfend, to providea cylindrical friction face bridging spaced flanges, with said flanges continuedas spaced arms offset withv in the curve `of the 'friction face to clear the friction face of anadjacent shoe project-ing a substantial distance to straddle the endof adjacent shoe.

9. Abralie shoe of T-section throughout 'niostof its length and channel-shaped at its end,l to provide at said end a cylindrical friction face bridging spaced flanges, With said flanges continued as spaced arnis offset Within the curve of the friction face to clear the friction face of an adjacent` shoe and projecting a substantial distance to straddle the end of said adjacent shoe. A

V10. A brake shoe having a ciirved friction yfaceand havingat itsend a part offset Within the curve of the friction face to clear the end of an adjacent shoe and odset at one side of the center plane of the shoe to overlap Without interference said end of said y 'adjacent shoe.

While a number of shoes have been de .s scribed in detail,.it is not my intention .tol

11. A brakeshoe having a curved friction face and having at its end a part offset Within the curve of the friction face to clear the end of an adjacent shoe and offset at one sidelofthe center plane of the shoe to overlap Without interference said end of said adjacent shoe, and arranged to be pivotally rnou'nted on a torque-taking device at the end of said offset part., I

12. A brake shoe having a'curvedfi'ict'ion face and having at its end a part offset Within the curve of the friction face to clear the end of'an adj acentshde and offset atfone side of the center plane of theI vshoe to Olveila'p' Without interference said end of said ad jacent shoe, and said shoe having a sti-Hning flange opposite thej'friction face and of ivhic'h rsaid offset part forins av continuation at one end. n

13. A brake shoe having a rcurved friction face and having at its end a part 'offset Within the curve of the friction face to clear ythe end of an adjacent shoe and offset at diie side of the center plane of tlieshoeto overlap Without interference said end oif'said adjacent shoe, andarranged to lie lpivotally mounted on a torquetaking device at the end of said offset part, and said `she having a stiffening flange opposite the 'friction face of which said ofl'set part fornis a cn tinuation at one end. 4

14. A brake' shoe having a cylindricallycurved friction part backed Vby a central stiffening flange bifurcated near one end of the shoe before the end/ofthe cylindrical part to forin spaced arms offset at the end of the cylindrical part, from the curve of the friction part to clear the endof an adjacent shoe and adapted to straddle said end of said adjacent shoe. j

15. A brake shoe having a cylindricallycurved friction part backed by a 'central stiifening flange offset from the 4centi-al plane of the shoe at one end of the shoe to form anchoring means offset froln the `cnrve of the friction part to clearthe end of "an adjacent shoe and adapted to overlap said end of said adjacent shoe. Y i

16. A brake shoe having a cylindricallycurved friction-part backed by a 'central stiffening flange bifiircated at oneencl 'ofthe shoe to forni spaced arms offset from the curve of the friction part to clear theend of an adjacent shoe and adapted to straddle said end of said adjacent shoe, together with a part'bridging said arms at their bases and forniing a continuation of the friction part.

17. A brake shoe havinga cylindricallycurved friction part backed 'by a vcentral stifening flange bifurcated at one end of `the shoe to form spaced arms offset from the curve of the friction part to clear the end of an adjacent shoe and adapted to straddle lsaid end of said adjacent shoe, the arms havplane of the shoe at one end of the shoe to forni anchoring means offset from the curve of the friction part to clear the end of an adjacent shoe and adapted to overlap said end of said adjacent shoe, the anchoring means having a large opening spaced from its end to provide clearance for the anchor of said adjacent shoe.

19. A brake shoe having a central stiffening web with oppositely-directed substantially radial flanges at one end7 and a Wear plate secured to the flanges and transmitting brake-applying thrust to said web;

20. A brake shoe having a curved friction face integral with a central stiffening Web provided with oppositely directed substantially radial flanges at one end, and a Wear plate secured to the flanges and transmitting brake-applying thrust to said web.

In testimony whereof, I have hereunto signed my name.

ADIEL Y. DODGE. 

